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(No Model.) 2 Sheets--Sheet 1. G. W. ROBERTS.

LOOK.

Patented Dec. 30, 1884.

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ilrTEn STATES GEORGE \V. ROBERTS, OF \IALLA IVALLA, \VASHINGTON TERRITORY.

LOCK.

TEPECIFI CATION forming part of Letters Patent No. 3. 4108 dated December 30, 1884.

Application filed May 5, 1884. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE XV. RonERTs, of Walla \Valla, county of IValla \Valla, and Territory of \Vashington, have invented an Improvement in Door-Locks; and I hereby declare the following to be a full, clear, and exact description thereof.

Myinvention relates to a new and useful doorlock; and it consists in apeculiar casing having separated boxes or compartments, in one of which is contained anovel latch mechanism and in the other a novel bolt mechanism, said casing being let into the door, and having flanges which overlap the adjacent edges of the door 011 both sides, and ears by which it is secured, all of which I shall hereinafter fully describe by reference to the accompanying drawings, in wh.ieh

Figure 1 is a vertical longitudinal section of my lock. Fig. 2 is a vertical cross-section of same. Fig. 3 is a perspective view of my lock. Fig. 4 is aview of the bolt H. Fig. 5 is a perspective view showing the application of my lock to a door. Fig. 6 is a horizontal section on liner 0:, Fig. 5.

The object of my invention is to provide a strong and well-secured lock having simple and effective mechanism.

The casin g A is preferably cast in two parts, one part of which forms the front plate, a, one side plate, and the upper and lower separated boxes or compartments, B B. The other part forms the other side plate, and is properly joined by rivets or screws. The front plate is provided top and bottom with projecting cars a, while its sides and the sides of the boxes are formed with flanges I), which at the inner ends of the boxes terminate in ears I).

In the upper box, I3, is the latch mechanism. O is the latch projecting through the face-plate, and c is its stein within the box. The forward portion of the stem is turned down, and is guided through aperforated standard, D, in the box, between which standard and the head of the latch is a spring, E, surrounding the stem, and which throws the latch out to position. The rear end of the stem is enlarged, and is slotted horizontally to allow the shank F of the handles G to pass through. This shank also passes through the side walls of the box, and is provided with wings f, which operate against a shoulder, f, on the latchstenr, whereby said latch may be Withdrawn by the rotation of the handles. This arrangement of the latch mechanism is simple and efi'ective.

In the lower box, B, is the bolt mechanism. H is the bolt, the end of which shoots through the face-plate.

I is a U shaped guide-plate fixed in the box, and between the sides of which the bolt plays, Fig. 2.

In the top of the side or sides of the guideplate I are cut small notches i, separated by a curved surface, as shown, Fig. 1. In these notches apin, h, from the bolt Hlies and locks the bolt. They are held down to their engagement by a strong spring, J which presses upon top of the bolt. In the under side of the bolt is out a notch, in, with which the bit of a key engages to first force said bolt upward to free its pin of the notch i, and then by the continued rotation of the key to shoot or withdraw the bolt, Fig. 4.

Through the sides of the U- shaped guideplate I are formed the necessary apertures-a, for the insertion of the key, and proper keyholes are made through the sides of the easing for the same purpose.

In Fig. 5 I show the application of my lock to a door. The door M is cut out in two places, and the boxes B B are fitted into the notches deep enough to let the face-plate come flush with the edge of the door. The flanges Z) of the casing embrace the door on each side all around the edges of the cut-out portions and face of the door. Screws 1? are put in through the cars a of the faceplate, and

through the center of it into the door, and

screws Q are put into the door through the ears I) of the sides. These secure the lock to the door most effectively. This lock adapted to be thus inserted has the advantage of strength and security over the common fiat side lock, and it is better than the mortiselock in requiring very much less work to fit it to place, besides obviating the necessity of key and handle holes through the door, and their attendant escutcheons and roses.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A door-lock having a casing, A, consisting of a face-plate, a, and the separated boxes or compartments B B, in one of which is contained the latch mechanism and in the other the bolt mechanism, and each. provided with flanges b, substantially as herein described.

2. A door-lock having a casing, A, consist ing of a face-plate, a, and the separated boxes or compartment-s B B, one of which contains the latch mechanism and the other the bolt mechanism, and a flange, 1), upon the edges of the face-plate and of the boxes, adapted,when the boxes are let into the door, to overlap the adjacent edges of the door on both sides, substantially as herein, described.

3. The casing A of a doorleck, consisting of a face-plate, a, having ears to, by which it is secured to the door, the separated boxes 13 B for thelatch and boltinechanisni, respectively, having ears I), by which they are secured in the door, and the flanges b on the edges of the faceplate and boxes, adapted, when the easwhich the bit of a key is adapted to engage to raise and shoot or withdraw said bolt, the U shaped guide-plate I, having top notches, i, with which the pin of the bolt engages, and the spring J for holding the bolt down to its engagement, substantially as herein described. In witness whereof I have hereunto set my hand.

' GEORGE W. ROBERTS. \Vitiiesses:

C. D. CoLn, J. H. BLoon. 

